PACCAR MX11 and MX13 engines, Fueling Troubles with MY21 ?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Supplier Guy, Jan 22, 2023.

  1. Supplier Guy

    Supplier Guy Bobtail Member

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    Nov 17, 2022
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    Hello, has anyone had injector troubles with the MY21 Paccar MX11 and MX13 engines? If yes, can you describe, thanks!
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    8,376
    Jul 12, 2017
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    Yes,

    Common symptoms include cold fuel knock that goes away once the engine is warm. From almost new and up to 100k miles.

    Replacements are in short supply.
     
  4. c.w

    c.w Light Load Member

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    Jun 26, 2021
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    KNOCK----FLUSH--- THEN KNOCK AGAIN---FLUSH----KNOCK NEXTDAY WHEN YOU TAKE IT BACK FROM THE DEALER
     
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